Happy Biiiirthday Mr. USAF X-37B Robot Space Plane

The X-37B was only meant to stay up in space for a gestational nine months, but a full year has now passed since launch and the US Air Force apparently has little interest in bringing its baby home. On the contrary: according to Space.com, the plan is to send up another unmanned space plane to keep the X-37B company on its [CLASSIFIED] missions. Whatever it's getting up to in that airless playground, it must be doing something right. Air Force Lt. Col. Tom McIntyre says the craft is "setting the standard for a reusable space plane and, on this one-year orbital milestone, has returned great value on the experimental investment." Which is a fine way of saying [STILL CLASSIFIED].